public class House2 implements Runnable {
	int waterAmount;       //用int变量模拟水量
	Thread dog,cat;        //线程是目标对象的成员
	House2() {
		dog=new Thread(this);  //当前House对象作为线程的目标对象 
		cat=new Thread(this); 
	}
	public void setWater(int w) {
		waterAmount = w;
	}
	public void run() {     
		while(true) {
			Thread t=Thread.currentThread();
			if(t==dog) { 
				System.out.println("家狗喝水") ; 
				waterAmount=waterAmount-2;  //狗喝的多
			}
			else if(t==cat){
				System.out.println("家猫喝水") ;   
				waterAmount=waterAmount-1;  //猫喝的少
			}
			System.out.println(" 剩 "+waterAmount);
			try{  Thread.sleep(2000);  //间隔时间
			}
			catch(InterruptedException e){}  
			if(waterAmount<=0) {
				return;    
			}  
		}
	}
}
